Sudden numbness of the left hand both physiological factors and disease factors, physiological factors are mostly seen in the sleep position is not correct, disease factors are seen in cervical spondylosis, peripheral neuropathy, cerebrovascular disease and so on.
1. Physiological factors: it is possible that the sleeping position is not correct due to the compression of the left hand, there will be blood circulation disorders, the left hand numbness, will be adjusted after the sleeping position can be relieved.
2. Disease factors
(1) Cervical spondylosis: cervical spondylosis is mostly seen in middle-aged and old people, but it is gradually becoming younger and younger, mainly due to long time looking down at the cell phone or computer. The protruding cervical intervertebral discs or hyperplasia of the bone compress the nerves of the hand, and the symptom of numbness of the hand can appear. In addition to this, dizziness, discomfort in the back of the neck, and soreness in the shoulders can also occur.
(2) Peripheral neuropathy: Peripheral neuropathy can be caused by many reasons, such as diabetes, immune factors, infections, nutrition and metabolism, etc., and the involvement of the nerves in the hand can cause numbness. It is recommended to improve electromyography, immunity and other related examinations.
(3) Cerebrovascular disease: patients with cerebral infarction or cerebral hemorrhage may also have numbness in the left hand due to ischemia, hypoxia and necrosis of brain tissues, and it is recommended to improve the cranial imaging to make a clear diagnosis.
The causes of left hand numbness are very complex, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to improve the relevant examinations to determine the cause of the disease and then systematic treatment.